US4484457A - Liquid-ring vacuum pump preceded by a precompressor - Google Patents

Liquid-ring vacuum pump preceded by a precompressor Download PDF

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Publication number
US4484457A
US4484457A US06/461,505 US46150583A US4484457A US 4484457 A US4484457 A US 4484457A US 46150583 A US46150583 A US 46150583A US 4484457 A US4484457 A US 4484457A
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United States
Prior art keywords
coolant
precompressor
pump
heat transfer
transfer means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/461,505
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English (en)
Inventor
Kurt Mugele
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Siemens AG
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Siemens AG
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Assigned to SIEMENS AKTIENGESELLSCHAFT, A CORP. OF GERMANY reassignment SIEMENS AKTIENGESELLSCHAFT, A CORP. OF GERMANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MUGELE, KURT
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Publication of US4484457A publication Critical patent/US4484457A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/001—General arrangements, plants, flowsheets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/005—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle

Definitions

  • the present invention relates to a liquid-ring vacuum pump preceded by a precompressor (or supercharger) and followed by a liquid separator, a heat exchanger being provided for transferring heat to a coolant, e.g., water, from a working fluid which has a higher boiling point than that of water.
  • a precompressor or supercharger
  • a heat exchanger being provided for transferring heat to a coolant, e.g., water, from a working fluid which has a higher boiling point than that of water.
  • the vacuum pump draws in gas and pushes it together with part of the working liquid, e.g., oil, into the liquid separator, which is disposed on the pressure side of the pump.
  • the compressed gas leaves the separator via an output stub at the top thereof, while the working liquid flows back into the vacuum pump.
  • the heat which is absorbed by the working liquid owing to compression and friction is transferred to the cooling water by means of a heat exchanger located in the working-liquid loop.
  • the cooling water initially having a temperature of 15° C., for example, is warmed up to the normal working-liquid temperature of 25° to 30° C. and in general is of no further use unless the temperature is brought to a higher level by an expensive heat pump.
  • the friction and compression heat energy which comes in thelast analysis from the operating motor of the vacuum pum is, therefore, lost as a rule.
  • An object of the present invention is to provide a vacuum generating system in which at least part of this heat is used.
  • this object is attained by the provision that the operating temperature of the working liquid in the pump and the separator is above the boiling point of the cooling water, energy for operating the precompressor being sup-plied by the steam generated in the heat exchanger.
  • the operating temperature of the working liquid in the pump and the separator is above the boiling point of the cooling water, energy for operating the precompressor being sup-plied by the steam generated in the heat exchanger.
  • the steam produced in the heat exchanger can serve as the propellant for the jet pump.
  • a side-canal gas-ring compressor is used as the precompressor, the steam can be used to propel a flow engine, for instance, a turbine, coupled to the compressor.
  • the steam produced in the system is advantageously separated as far as possible in a con-denser disposed between the precompressorand the pump.
  • FIG. 1 is a diagram of a vacuum generating system showing a pre-compressor in the form of a jet pump driven by recycled energy in accordance with the present invention
  • FIG. 2 is a diagram similar to FIG. 1, wherein the precompressor is in the form of a side-canal gas-ring compressor.
  • the mixture 1 is first precompressed in jet pump 2 by a factor 1.5 and transported with the steam or vapor from a nozzle output 71 of jep pump 2 via a conduit 73 to a condenser 3 in which the vapor is condensed as far as possible.
  • the separated liquid is discharged via a barometric tube 31. From the condenser 3, uncondensed gas-vapor mixture is transported at 50° C.
  • liquid-ring vacuum pump 4 operates with a working fluid 5 such as oil which has a boiling point, for instance, of 500° C.
  • liquid-ring vacuum pump 4 the vapor-gas mixture 1 is compressed to atmospheric pressure; from the pump the gas is subsequently transported together with part of the working liquid 5 to a liquid separator 6 via a duct 77 serving as part of both a gas flow path and a liquid flow circuit 79 which also includes a pump 62, as well as separator 6.
  • T1 of approximately 130° C., the working liquid is separated in separator 6 from the gas.
  • the so purified gas of atmospheric pressure is then transported through an emission cooler 63, whereby residual moisture is separated, and is vented to the atmosphere as purified gas 9 at atmospheric pressure. It would be conceivable to feed the gas to a further processing stage prior to release of the gas into the air.
  • the working liquid 5 accumulated in separator 6 is returned at a temperature of approximately 120° C. to pump 4 via pump 62.
  • a coolant 8 such as water with an initial temperature T2 of, say 15° C. is first preheated to 40° C. in condenser 3 by means of a heat exchanger 32. From there the coolant is transported via conduits 67 and a heat exchanger 64 in emission cooler 63 to a coolant input 83 of a heat exchanger 61 in separator 6. Upon reaching heat exchanger 61, the coolant has a temperature, for example, of 60° C.
  • the saturated steam serves as the propellant for jet pump 2.
  • boiling point of fluid 5 is substantially greater than the boiling point of coolant 8, i.e., of water.
  • the difference facilitates the generation in exchanger 61 of vaporized coolant in the form of super-saturated steam.
  • Heat exchanger 61 must, of course, be in contact with the working fluid in liquid flow circuit 79. It is not necessary that the heat exchanger be disposed in that part of the liquid flow circuit represented by separator 6.
  • the precompressor may take the form of a side-canal gas-ring compressor 85.
  • the compressor is driven by a turbine or flow engine 87 via a shaft 89.
  • the turbine in turn is powered by the super-saturated steam 81 carried by conduit 7 from exchanger 61.
  • An output 91 of turbine 87 is connected to condenser 3 via a duct 93, while an output of compressor 85 is coupled to an input of the liquid ring vacuum pump 4 via a conduit 95.
  • Other reference numerals in FIG. 2 have the same meaning and represent the same structual features as in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
US06/461,505 1982-02-11 1983-01-27 Liquid-ring vacuum pump preceded by a precompressor Expired - Fee Related US4484457A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3204784 1982-02-11
DE19823204784 DE3204784A1 (de) 1982-02-11 1982-02-11 Fluessigkeitsringvakuumpumpe mit vorgeschaltetem vorverdichter

Publications (1)

Publication Number Publication Date
US4484457A true US4484457A (en) 1984-11-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
US06/461,505 Expired - Fee Related US4484457A (en) 1982-02-11 1983-01-27 Liquid-ring vacuum pump preceded by a precompressor

Country Status (3)

Country Link
US (1) US4484457A (de)
EP (1) EP0088226B1 (de)
DE (2) DE3204784A1 (de)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638642A (en) * 1984-01-10 1987-01-27 Kyowa Hakko Kogyo Co., Ltd. Heat pump
US4984432A (en) * 1989-10-20 1991-01-15 Corey John A Ericsson cycle machine
US5169502A (en) * 1988-05-30 1992-12-08 Siemens Aktiengesellschaft Installation for processing liquids
US5295792A (en) * 1993-04-02 1994-03-22 Ingersoll-Rand Company Method for non-destructively compressing ozone gas
US5467613A (en) * 1994-04-05 1995-11-21 Carrier Corporation Two phase flow turbine
US5618164A (en) * 1994-12-06 1997-04-08 Siemens Aktiengesellschaft Liquid ring compressor with plural after-cooler elements
EP0790545A2 (de) * 1996-02-15 1997-08-20 DEUTZ Aktiengesellschaft Verfahren und Einrichtung zur Messung bzw. Überwachung der Dichte von Flüssigkeiten
US6234760B1 (en) * 1997-06-16 2001-05-22 Serguei A. Popov Pumping-ejection apparatus and variants
WO2001066950A1 (fr) * 2000-01-03 2001-09-13 Zigang Jiang Pompe-compresseur sous vide a circulation de liquide et a tambour
WO2002027152A2 (de) * 2000-09-29 2002-04-04 Siemens Aktiengesellschaft Dampfturbinenanlage und verfahren zum betreiben einer dampfturbinenanlage
US20020125680A1 (en) * 1999-03-22 2002-09-12 David Muhs Trailer and fuel tank assembly
US6574987B2 (en) * 2000-03-15 2003-06-10 Denso Corporation Ejector cycle system with critical refrigerant pressure
EP1490599A2 (de) * 2002-03-15 2004-12-29 Water Management Systems Pumpensystem mit unterdruckquelle
US20050011221A1 (en) * 2003-07-18 2005-01-20 Tgk Co., Ltd. Refrigeration cycle
US20070074533A1 (en) * 2005-08-24 2007-04-05 Purdue Research Foundation Thermodynamic systems operating with near-isothermal compression and expansion cycles
US20080175723A1 (en) * 2007-01-19 2008-07-24 Water Management Systems Vacuum pump with wear adjustment
US20080175722A1 (en) * 2007-01-19 2008-07-24 David Muhs Vacuum pump with wear adjustment
CN100434832C (zh) * 2006-11-21 2008-11-19 西安交通大学 一种带喷射器的自行复叠式制冷循环系统
WO2009032709A1 (en) 2007-08-28 2009-03-12 Air Products And Chemicals, Inc. Apparatus and method for controlling the temperature of a cryogen
US20100329903A1 (en) * 2009-06-29 2010-12-30 Lightsail Energy Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US20100326064A1 (en) * 2009-06-29 2010-12-30 Lightsail Energy Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US20110044827A1 (en) * 2009-08-24 2011-02-24 David Muhs Self priming pump assembly with a direct drive vacuum pump
US8247915B2 (en) 2010-03-24 2012-08-21 Lightsail Energy, Inc. Energy storage system utilizing compressed gas
US8436489B2 (en) 2009-06-29 2013-05-07 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
EP2804928A1 (de) * 2012-01-20 2014-11-26 Catalytec Verfahren und vorrichtung zur mechanischen aufheizung eines stoffgemisches
CN104277911A (zh) * 2014-09-25 2015-01-14 江阴天田真空设备制造有限公司 食用油脂冷凝冻结脱臭真空设备
US20160169226A1 (en) * 2014-12-12 2016-06-16 General Electric Company Liquid ring fluid flow machine
US20160201672A1 (en) * 2015-01-08 2016-07-14 Gardner Denver Nash Llc Low pressure sealing liquid entry area in a compressor type liquid ring pump
US10030670B2 (en) 2012-12-14 2018-07-24 Xylem Ip Management S.À R.L. Cooling arrangement of a pump intended for pumping a liquid
CN110671325A (zh) * 2019-09-27 2020-01-10 西安奕斯伟硅片技术有限公司 真空吸附装置
US20210364003A1 (en) * 2018-03-14 2021-11-25 Edwards Technologies Vacuum Engineering (Qingdao) Co. Ltd. Control system for liquid ring pumps

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8325813D0 (en) * 1983-09-27 1983-10-26 Hick Hargreaves & Co Ltd Condenser vacuum system
US4857084A (en) * 1988-06-10 1989-08-15 The Dow Chemical Company Pressure swing adsorption apparatus and process for recovery of oil-soluble vapors
WO1993001396A1 (en) * 1991-07-03 1993-01-21 Polar Vac International Inc. Cooling apparatus for recirculating vacuum pump compressant
DE19715480C2 (de) * 1997-04-14 1999-01-14 Saskia Solar Und Energietechni Vakuumpumpsystem mit einer Flüssigringpumpe
DE10214331A1 (de) * 2002-03-28 2003-10-23 Nash Elmo Ind Gmbh Pumpeinrichtung, Verfahren zum Betreiben einer Pumpeinrichtung und dessen Verwendung bei einer Dampfturbinenanlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481529A (en) * 1966-05-12 1969-12-02 Siemens Ag Method and apparatus for pumping with a liquid-ring in series with a jet ejector
US3575532A (en) * 1968-03-15 1971-04-20 Siemens Ag Gas pump of a liquid-ring type
US3973879A (en) * 1974-03-13 1976-08-10 Siemens Aktiengesellschaft Liquid ring compressor
US4385868A (en) * 1979-11-19 1983-05-31 Nash Engineering Company Systems for evacuating process fluids having condensable and incondensable components

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946916C (de) * 1954-01-12 1956-08-09 Karl Ebner Verfahren zur Erhoehung der Ansaugleistung von Luftpumpen
DE1023854B (de) * 1955-09-29 1958-02-06 Otto Siemen Mehrstufige Fluessigkeitsringgaspumpe
DE2841906C2 (de) * 1978-09-26 1980-02-21 Siemens Ag, 1000 Berlin Und 8000 Muenchen Flüssigkeitsringverdichter oder -vakuumpumpe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481529A (en) * 1966-05-12 1969-12-02 Siemens Ag Method and apparatus for pumping with a liquid-ring in series with a jet ejector
US3575532A (en) * 1968-03-15 1971-04-20 Siemens Ag Gas pump of a liquid-ring type
US3973879A (en) * 1974-03-13 1976-08-10 Siemens Aktiengesellschaft Liquid ring compressor
US4385868A (en) * 1979-11-19 1983-05-31 Nash Engineering Company Systems for evacuating process fluids having condensable and incondensable components

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Siemens Brochure E 7251046. *

Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638642A (en) * 1984-01-10 1987-01-27 Kyowa Hakko Kogyo Co., Ltd. Heat pump
US5169502A (en) * 1988-05-30 1992-12-08 Siemens Aktiengesellschaft Installation for processing liquids
US4984432A (en) * 1989-10-20 1991-01-15 Corey John A Ericsson cycle machine
WO1991005974A1 (en) * 1989-10-20 1991-05-02 Corey John A Ericsson cycle machine
US5295792A (en) * 1993-04-02 1994-03-22 Ingersoll-Rand Company Method for non-destructively compressing ozone gas
US5467613A (en) * 1994-04-05 1995-11-21 Carrier Corporation Two phase flow turbine
US5618164A (en) * 1994-12-06 1997-04-08 Siemens Aktiengesellschaft Liquid ring compressor with plural after-cooler elements
EP0790545A3 (de) * 1996-02-15 1998-05-20 DEUTZ Aktiengesellschaft Verfahren und Einrichtung zur Messung bzw. Überwachung der Dichte von Flüssigkeiten
EP0790545A2 (de) * 1996-02-15 1997-08-20 DEUTZ Aktiengesellschaft Verfahren und Einrichtung zur Messung bzw. Überwachung der Dichte von Flüssigkeiten
US6234760B1 (en) * 1997-06-16 2001-05-22 Serguei A. Popov Pumping-ejection apparatus and variants
US8246316B2 (en) 1999-03-22 2012-08-21 David Muhs Vacuum source and float valve for a self-priming pump
US7311335B2 (en) 1999-03-22 2007-12-25 Water Management Systems Trailer and fuel tank assembly
US7794211B2 (en) 1999-03-22 2010-09-14 Water Management Systems Pump System with a vacuum source coupled to a separator
US20020125680A1 (en) * 1999-03-22 2002-09-12 David Muhs Trailer and fuel tank assembly
US8662862B2 (en) 1999-03-22 2014-03-04 Water Management Systems, LLC Pump system with vacuum source
US20060110261A1 (en) * 1999-03-22 2006-05-25 David Muhs Pump system with vacuum source
US20110008183A1 (en) * 1999-03-22 2011-01-13 David Muhs Pump system with vacuum source
WO2001066950A1 (fr) * 2000-01-03 2001-09-13 Zigang Jiang Pompe-compresseur sous vide a circulation de liquide et a tambour
US6574987B2 (en) * 2000-03-15 2003-06-10 Denso Corporation Ejector cycle system with critical refrigerant pressure
US20040003593A1 (en) * 2000-09-29 2004-01-08 Harry Sauer Steam turbine plant, and method of operating a steam turbine plant
WO2002027152A3 (de) * 2000-09-29 2002-06-27 Siemens Ag Dampfturbinenanlage und verfahren zum betreiben einer dampfturbinenanlage
WO2002027152A2 (de) * 2000-09-29 2002-04-04 Siemens Aktiengesellschaft Dampfturbinenanlage und verfahren zum betreiben einer dampfturbinenanlage
EP1490599A2 (de) * 2002-03-15 2004-12-29 Water Management Systems Pumpensystem mit unterdruckquelle
EP1490599A4 (de) * 2002-03-15 2007-07-11 Water Man Systems Pumpensystem mit unterdruckquelle
US7207186B2 (en) * 2003-07-18 2007-04-24 Tgk Co., Ltd. Refrigeration cycle
US20050011221A1 (en) * 2003-07-18 2005-01-20 Tgk Co., Ltd. Refrigeration cycle
US7401475B2 (en) * 2005-08-24 2008-07-22 Purdue Research Foundation Thermodynamic systems operating with near-isothermal compression and expansion cycles
US20070074533A1 (en) * 2005-08-24 2007-04-05 Purdue Research Foundation Thermodynamic systems operating with near-isothermal compression and expansion cycles
CN100434832C (zh) * 2006-11-21 2008-11-19 西安交通大学 一种带喷射器的自行复叠式制冷循环系统
US20080175723A1 (en) * 2007-01-19 2008-07-24 Water Management Systems Vacuum pump with wear adjustment
US20080175722A1 (en) * 2007-01-19 2008-07-24 David Muhs Vacuum pump with wear adjustment
US7878768B2 (en) 2007-01-19 2011-02-01 David Muhs Vacuum pump with wear adjustment
WO2009032709A1 (en) 2007-08-28 2009-03-12 Air Products And Chemicals, Inc. Apparatus and method for controlling the temperature of a cryogen
US20100329903A1 (en) * 2009-06-29 2010-12-30 Lightsail Energy Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8353156B2 (en) 2009-06-29 2013-01-15 Lightsail Energy Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8240142B2 (en) 2009-06-29 2012-08-14 Lightsail Energy Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8065874B2 (en) 2009-06-29 2011-11-29 Lightsale Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8146354B2 (en) 2009-06-29 2012-04-03 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8191360B2 (en) 2009-06-29 2012-06-05 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8196395B2 (en) 2009-06-29 2012-06-12 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8037677B2 (en) 2009-06-29 2011-10-18 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8061132B2 (en) 2009-06-29 2011-11-22 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US20100326064A1 (en) * 2009-06-29 2010-12-30 Lightsail Energy Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8436489B2 (en) 2009-06-29 2013-05-07 Lightsail Energy, Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US8998586B2 (en) 2009-08-24 2015-04-07 David Muhs Self priming pump assembly with a direct drive vacuum pump
US20110044827A1 (en) * 2009-08-24 2011-02-24 David Muhs Self priming pump assembly with a direct drive vacuum pump
US8247915B2 (en) 2010-03-24 2012-08-21 Lightsail Energy, Inc. Energy storage system utilizing compressed gas
EP2804928A1 (de) * 2012-01-20 2014-11-26 Catalytec Verfahren und vorrichtung zur mechanischen aufheizung eines stoffgemisches
US10030670B2 (en) 2012-12-14 2018-07-24 Xylem Ip Management S.À R.L. Cooling arrangement of a pump intended for pumping a liquid
CN104277911B (zh) * 2014-09-25 2016-08-31 江阴天田真空设备制造有限公司 食用油脂冷凝冻结脱臭真空设备
CN104277911A (zh) * 2014-09-25 2015-01-14 江阴天田真空设备制造有限公司 食用油脂冷凝冻结脱臭真空设备
US20160169226A1 (en) * 2014-12-12 2016-06-16 General Electric Company Liquid ring fluid flow machine
US10837443B2 (en) * 2014-12-12 2020-11-17 Nuovo Pignone Tecnologic - SRL Liquid ring fluid flow machine
US20160201672A1 (en) * 2015-01-08 2016-07-14 Gardner Denver Nash Llc Low pressure sealing liquid entry area in a compressor type liquid ring pump
US11512700B2 (en) * 2015-01-08 2022-11-29 Gardner Denver Nash Llc Low pressure sealing liquid entry area in a compressor type liquid ring pump
US20210364003A1 (en) * 2018-03-14 2021-11-25 Edwards Technologies Vacuum Engineering (Qingdao) Co. Ltd. Control system for liquid ring pumps
US11746785B2 (en) * 2018-03-14 2023-09-05 Edwards Technologies Vacuum Engineering (Qingdao) Control system for liquid ring pumps
CN110671325A (zh) * 2019-09-27 2020-01-10 西安奕斯伟硅片技术有限公司 真空吸附装置

Also Published As

Publication number Publication date
EP0088226A2 (de) 1983-09-14
DE3370980D1 (en) 1987-05-21
EP0088226A3 (en) 1985-06-12
EP0088226B1 (de) 1987-04-15
DE3204784A1 (de) 1983-08-25

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